Punker are you serious? I see you answering people like a jackass all the time. I'm only currently making 120M a day, but if it's HIS computer, the membership cost alone is 8-10M a month, then if he does sudoku, rocktail, or sorc garden all of them would be 150k+, which would pay off any membership in 3 days.
Server cost: $100 + $100 setup
Amount of bots: 10
membership costs: 80-100M // : $50
$250 initial fee, setup time for sudoku and sorc = 2 days - typically 26-28 days left, which should bring in at the 'least', 840M range, so $420 a month. Leaving $170 profit the first month with little effort and work, and minimal management.
Month 2 = $270 profit a month, decide to sell on your own thread, hey $300+ a month, switch to RC, bam about $500+ a month.
Do it on your own computer and take out the server costs, you catch the drift, goldfarming is quite simplistic and immediately profitable. There may be an initial learning curve, but you shouldn't try to prevent people so much.